Brake-shoe.



HTZ WILLIAM SA RGENT.

BRAKE SHOE.

APPLICATION FILED MAR. 20, 1916.

1,184,137. Patented May 23, 1916.

UNITED s'rATns ra'rnivr oi nion.

FITZ WILLIAM SARGENT, or MAHWAH, NEW JERSEY, AssIeNon 1 0 AMERICAN BRAKE SHOE & FOUNDRY company, or MAHWAH, new JEnsEY, A CORPORATION or NEW JERSEY.

To all whom it may concern: 1 1

Be it known that I, Frrz WILLIAM, she" GENT, a citizen of the United States, and a resident of Mahwah, in the county of Bergen and State of New J ersey',ha37 made and invented certain new anduseful Improvements in Brake- Shoes, of which the.

porating in the cast metal body,'.ha rd mineral abrasives, which, upon contacting with the tread and flange of the wheel, grind and true the same, the abrasive inserts being localized so as to counteract the wear of the rail upon. the flange and tread of the wheel.

In order to prevent the abrasive inserts from becoming disarranged during the casting of 'the shoe, it has been the usual practice to anchor them in position by means of' nails, or by forcing the inserts into the sand of the mold. This separate securement of each insert in position, requires considerable time and labor, and much difficulty has been.

. experienced by one or more of the abrasive inserts becoming displaced and shifting to undesired parts of the shoe, or collecting at one locality, and thereby'producing a bad cutting effect upon the car wheel. The occurrenceof several abrasive'inserts at one point, prevents the molten metal from flowingcompletely therearolind, materially weakening theshoe and allowingthe abrasive inserts to be easily dislodged during service. A further objection to this secure-' ment of the abrasive inserts, .is that relatively large lumps of abrasive material must be used, and arranged in a. single layer, whichp'roduces an injurious effect upon the car wheel, bythe continuoi'ls grinding and abrading action at fixed points. The weak-' ening efi'ect upon the shoe, by the presence of large lumps of abrasives, prohibit'sfthe' employment of lumps sutlicientlyjlarge to extend from the wearing face to-the back of the shoe, so that the abrad-ing properties are not present throughout the-entire serviceable life of the brake-shoe.

It is therefore an object of my inventionto provide a brake shoe'whereinthe abrasiveinse'rts may be easily and quickly arranged,

and securely anchored, in an orderly and -f Specification of Letters Patent.

BRAKE-SHOE.

Patented May 2a, 1916.

Application and March 20, 1am. Serial No. 85,309.

symmetrical position, within the mold, this end being attained by the employment of a bundle of expanded metal, with regularly spaced openings, in which the abrasive inserts are wedgedly fixed and anchored.

Relatively small abrasive inserts may acpoints at which the grinding and abrading action takes place, to continuously shift over the face of the shoe as it wears, and also providing that the dressing and 'truing qualities of the shoe are maintained throughout the serviceable life thereof.

A further object is to provide a brake shoe wherein the anchoring means for hold- 1ng the abrasive inserts in place during casting, subsequently form a part of the body of the shoe, and reinforce the same throughout, and also form a part, and add to the effectiveness, of the matrices in which the abrasiveinserts are located and held.

Other objects andadvantages willappear as the description proceeds, wherein it is to be understood that changes in the precise embodiment of the invention can be made within the scope of what is claimed without departingv from the spirit thereof.

The preferred embodiment of my invention is disclosed in the accompanying drawings, wherein:

Figure 1 is a view in perspective of astrip of expanded or openwork ductile metal, with the lumps of the abrasive inserts wedged within the various interstices thereof; Fig. 2 is a viewin top plan of my improved brake shoe, with a portion of the body thereof broken away; Fig. 3 is a view in vertical section of the brake shoe illustrated in Fig. 2; Fig. 1 is a viewin vertical section of a brake shoe, with the abrasive inserts-localized or confined to certain portions thereof; Fig. 5 is a fragmentary view in perspective of a brake shoe in which the reinforcing member is formedasa cage for the retention of the abrasive inserts; Fig. 6

' isa view in perspective, illustrating the ara and Fig. 7 is a view in longitudinal vertical section of a portion ofa-brake shoe having the above arrangement of abrasive inserts and reinforcing strips incorporated therein. Referring-specifically to the several views,

a. reinforcing member 10, formedof expanded dnctilemetal, is provided with abrasive inserts Ill, which are forcibly wedged between the various strands thereof and rigidly anchored'in place. The reinforcing member is provided with regularly spaced openings, so that the small lumps of abrasive inserts may be easily and quickly arranged in regular and symmetrical position, and rigidly anchored and held in spaced relation,

so that after the body of the shoe has been.

cast, each abrasive insert will be completely surrounded by molten metal.

The reinforcing member accordingly acts as a spacer, and is positioned within a mold and the body 12 of the brake shoe cast therearonnd, the usual type of steel back 13 being incorporated in the shoe if desired.

As disclosed in Figs. 3, l,,6 and 7, the re-.

inforcing member may be made up of a number of super posed layers 14 of expanded metal, and the lamps of abrasive inserts. arranged in staggered. relation. The somewhat-modified form of reinforcing member or spacer .15, disclosed in Fig. 5,has the side edges thereof overturned so as to form and ellect a complete cage, in which the abrasive inserts are contained. The reinforcing member in the several forms disclosed may, if desired,'extend throughout the entire body of the shoe, and the abrasive inserts be confined or restricted to certain portions thereof, this lat- 'ter feature being clearly illustrated in Fig. 4.

work metal therein, and lumps of abrasive inserts in said body.

2. A brake shoe comprising a cast metal body, an openwork reinforcing member therein, and lamps of abrasive inserts embedded in said body and combined with said.

ductilereinforcing member. I v

3. A brake shoe comprising a castmetal body with an openwork reinforcingmember therein, and lamps of abrasive inserts located between the strands of said reinforcing member.

4. A brake shoe comprising a cast metal body with a reinforcing member having regularly spaced intermes'hing strands and lumps of abrasive inserts embedded in said body and located between the strands of said reinforcing member.

5.. A brake shoe comprisinga cast metal body with a bundle of expandedmetal there in, abrasive inserts embedded in said body, arranged in superposed layers and combined with the strands of said expanded metaL' 6. A brake shoe comprising a cast metal body with a reinforcing member of open- WOIK ductile metal therein, and relatively small lumps of abrasive inserts embedded within the body of said shoe, associated with the strands of said openwork metal and arranged in snperposedlayers extending from ghial-wearing'face to the back of said shoe 79 A brake shoe comprising a cast metal body with a reinforcing member therein and formed of superposed layersof openwork metal, and lumps of abrasive inserts positioned between the layers of said reinforcing member.

Signed at Mahwah, in the connty of Bergen and State of New Jersey, this seventh day of March A. D. 1916.

FITZ WILLIAM SARGENT.

' Witnesses:

R. (I. Aileen, CHARLES N. WINTER. 

